Titanium dioxide is a promising anode for efficient lithium‐ion storage in terms of low cost, good structural stability, and inherent safety. However, its performance in Li‐ion storage is hindered by poor electronic conductivity. In this work, a solvothermal approach was applied for the synthesis of Nb‐doped TiO₂ nanocrystals with Nb content up to 33 at. %. The enhanced electronic conductivity and favorable electrochemical kinetics led to superior specific capacity, rate capability, and cycling stability compared to pristine TiO₂. For the optimum dopant content of 21 at. %, a specific capacity of 58 mAh g⁻¹ was reached at 10 A g⁻¹ compared to just 28 mAh g⁻¹ for pure TiO₂, in addition to almost 20 % higher capacity retention after prolonged cycling. The strategy in the current work can be easily extended to the design of other high‐performance electrode materials for energy storage.

中文翻译：

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高掺杂铌掺杂二氧化钛可增强锂离子存储

就低成本，良好的结构稳定性和固有的安全性而言，二氧化钛是有效存储锂离子的有希望的阳极。但是，其在锂离子电池中的性能受到电子电导率差的阻碍。在这项工作中，采用溶剂热法合成了Nb含量高达33 at的Nb掺杂的TiO ₂纳米晶体。％。与原始TiO ₂相比，增强的电子电导率和良好的电化学动力学特性导致了更高的比容量，速率能力和循环稳定性。对于21 at。的最佳掺杂剂含量。％，58毫安g的比容量^-1以10 A G达到^-1相比，只是28毫安克^-1为纯的TiO ₂，以及长时间循环后的容量保持率提高近20％。当前工作中的策略可以轻松扩展到其他用于储能的高性能电极材料的设计。